Unable use kubernetes Ingress to visit dashboard

Traefik Traefik v2
,
1

What did you do?

Hi, I want to use kubernetes Ingress to visit dashboard, I wrote the belows yaml, it not works

---
apiVersion: v1
kind: Service
metadata:
  name: traefik-dashboard
  namespace: traefik-system
spec:
  selector:
    app.kubernetes.io/name: traefik
  ports:
  - name: web
    port: 8000
    targetPort: web
---
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: traefik-dashboard
  namespace: traefik-system
  labels:
    name: traefik-dashboard
spec:
  rules:
  - host: traefik.my.domain
    http:
      paths:
      - pathType: Prefix
        path: /dashboard
        backend:
          service:
            name: traefik-dashboard
            port: 
              number: 8000

IngressRoute is ok

apiVersion: traefik.containo.us/v1alpha1
kind: IngressRoute
metadata:
  name: traefik-dashboard
  namespace: traefik-system
spec:
  entryPoints:
    - web
  routes:
    - match: Host(`traefik.my.domain`) && (PathPrefix(`/dashboard`) || PathPrefix(`/api`))
      kind: Rule
      services:
        - name: api@internal
          kind: TraefikService
      middlewares:
        - name: user-auth

What did you see instead?

404

What version of Traefik are you using?

v2.8.0

What is your environment & configuration?

v1.23.9+k3s1

If applicable, please paste the log output in DEBUG level

No response